LXR linux/net/irda/irnet/irnet

   1/*
   2 *      IrNET protocol module : Synchronous PPP over an IrDA socket.
   3 *
   4 *              Jean II - HPL `00 - <jt@hpl.hp.com>
   5 *
   6 * This file contains all definitions and declarations necessary for the
   7 * IRDA part of the IrNET module (dealing with IrTTP, IrIAS and co).
   8 * This file is a private header, so other modules don't want to know
   9 * what's in there...
  10 */
  11
  12#ifndef IRNET_IRDA_H
  13#define IRNET_IRDA_H
  14
  15/***************************** INCLUDES *****************************/
  16/* Please add other headers in irnet.h */
  17
  18#include "irnet.h"              /* Module global include */
  19
  20/************************ CONSTANTS & MACROS ************************/
  21
  22/*
  23 * Name of the service (socket name) used by IrNET
  24 */
  25/* IAS object name (or part of it) */
  26#define IRNET_SERVICE_NAME      "IrNetv1"
  27/* IAS attribute */
  28#define IRNET_IAS_VALUE         "IrDA:TinyTP:LsapSel"
  29/* LMP notify name for client (only for /proc/net/irda/irlmp) */
  30#define IRNET_NOTIFY_NAME       "IrNET socket"
  31/* LMP notify name for server (only for /proc/net/irda/irlmp) */
  32#define IRNET_NOTIFY_NAME_SERV  "IrNET server"
  33
  34/****************************** TYPES ******************************/
  35
  36/*
  37 * This is the main structure where we store all the data pertaining to
  38 * the IrNET server (listen for connection requests) and the root
  39 * of the IrNET socket list
  40 */
  41typedef struct irnet_root
  42{
  43  irnet_socket          s;              /* To pretend we are a client... */
  44
  45  /* Generic stuff */
  46  int                   magic;          /* Paranoia */
  47  int                   running;        /* Are we operational ? */
  48
  49  /* Link list of all IrNET instances opened */
  50  hashbin_t *           list;
  51  spinlock_t            spinlock;       /* Serialize access to the list */
  52  /* Note : the way hashbin has been designed is absolutely not
  53   * reentrant, beware... So, we blindly protect all with spinlock */
  54
  55  /* Handle for the hint bit advertised in IrLMP */
  56  void *                skey;
  57
  58  /* Server socket part */
  59  struct ias_object *   ias_obj;        /* Our service name + lsap in IAS */
  60
  61} irnet_root;
  62
  63
  64/**************************** PROTOTYPES ****************************/
  65
  66/* ----------------------- CONTROL CHANNEL ----------------------- */
  67static void
  68        irnet_post_event(irnet_socket *,
  69                         irnet_event,
  70                         __u32,
  71                         __u32,
  72                         char *,
  73                         __u16);
  74/* ----------------------- IRDA SUBROUTINES ----------------------- */
  75static inline int
  76        irnet_open_tsap(irnet_socket *);
  77static inline __u8
  78        irnet_ias_to_tsap(irnet_socket *,
  79                          int,
  80                          struct ias_value *);
  81static inline int
  82        irnet_find_lsap_sel(irnet_socket *);
  83static inline int
  84        irnet_connect_tsap(irnet_socket *);
  85static inline int
  86        irnet_discover_next_daddr(irnet_socket *);
  87static inline int
  88        irnet_discover_daddr_and_lsap_sel(irnet_socket *);
  89static inline int
  90        irnet_dname_to_daddr(irnet_socket *);
  91/* ------------------------ SERVER SOCKET ------------------------ */
  92static inline int
  93        irnet_daddr_to_dname(irnet_socket *);
  94static inline irnet_socket *
  95        irnet_find_socket(irnet_socket *);
  96static inline int
  97        irnet_connect_socket(irnet_socket *,
  98                             irnet_socket *,
  99                             struct qos_info *,
 100                             __u32,
 101                             __u8);
 102static inline void
 103        irnet_disconnect_server(irnet_socket *,
 104                                struct sk_buff *);
 105static inline int
 106        irnet_setup_server(void);
 107static inline void
 108        irnet_destroy_server(void);
 109/* ---------------------- IRDA-TTP CALLBACKS ---------------------- */
 110static int
 111        irnet_data_indication(void *,           /* instance */
 112                              void *,           /* sap */
 113                              struct sk_buff *);
 114static void
 115        irnet_disconnect_indication(void *,
 116                                    void *,
 117                                    LM_REASON,
 118                                    struct sk_buff *);
 119static void
 120        irnet_connect_confirm(void *,
 121                              void *,
 122                              struct qos_info *,
 123                              __u32,
 124                              __u8,
 125                              struct sk_buff *);
 126static void
 127        irnet_flow_indication(void *,
 128                              void *,
 129                              LOCAL_FLOW);
 130static void
 131        irnet_status_indication(void *,
 132                                LINK_STATUS,
 133                                LOCK_STATUS);
 134static void
 135        irnet_connect_indication(void *,
 136                                 void *,
 137                                 struct qos_info *,
 138                                 __u32,
 139                                 __u8,
 140                                 struct sk_buff *);
 141/* -------------------- IRDA-IAS/LMP CALLBACKS -------------------- */
 142static void
 143        irnet_getvalue_confirm(int,
 144                               __u16,
 145                               struct ias_value *,
 146                               void *);
 147static void
 148        irnet_discovervalue_confirm(int,
 149                                    __u16,
 150                                    struct ias_value *,
 151                                    void *);
 152#ifdef DISCOVERY_EVENTS
 153static void
 154        irnet_discovery_indication(discinfo_t *,
 155                                   DISCOVERY_MODE,
 156                                   void *);
 157static void
 158        irnet_expiry_indication(discinfo_t *,
 159                                DISCOVERY_MODE,
 160                                void *);
 161#endif
 162
 163/**************************** VARIABLES ****************************/
 164
 165/*
 166 * The IrNET server. Listen to connection requests and co...
 167 */
 168static struct irnet_root        irnet_server;
 169
 170/* Control channel stuff (note : extern) */
 171struct irnet_ctrl_channel       irnet_events;
 172
 173/* The /proc/net/irda directory, defined elsewhere... */
 174#ifdef CONFIG_PROC_FS
 175extern struct proc_dir_entry *proc_irda;
 176#endif /* CONFIG_PROC_FS */
 177
 178#endif /* IRNET_IRDA_H */
 179